Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 605 discussion

The key reasons are: The Storage Gateway volume gateway provides iSCSI block storage using cached volumes. This allows replacing the on-premises iSCSI servers with minimal changes. Cached volumes store frequently accessed data locally for low latency access, while storing less frequently accessed data in S3. This reduces the number of on-premises servers while still providing low latency access to hot data. EBS does not provide iSCSI support to replace the existing servers. S3 File Gateway is for file storage, not block storage. Stored volumes would store all data on-premises, not in S3.

Low latency = always look for cache or local storage. A: Doesn't address low latency B: Don't think this is possible CD are both low latency but D is better: https://aws.amazon.com/storagegateway/faqs/#:~:text=In%20the%20cached%20mode%2C%20your,asynchronously%20backed%20up%20to%20AWS.

low-latency access to frequently used data = cached volumes

Answer D Here is the link ; https://docs.aws.amazon.com/storagegateway/latest/vgw/WhatIsStorageGateway.html

ISCI=Volume Gateway. low-latency access to frequently used data = cached volumes

"low-latency access to FREQUENTLY used data" = Cached AWS Storage Gateway volumes

An AWS Storage Gateway volume gateway is a hybrid storage solution that connects your on-premises applications to your cloud storage. It provides low-latency access to frequently used data while storing your entire dataset in the cloud. When you configure an AWS Storage Gateway volume gateway with cached volumes, the gateway stores a copy of frequently accessed data locally. This allows you to provide low-latency access to your frequently accessed data while reducing your dependency on on-premises servers.